小编use*_*239的帖子

我正在尝试链接我的问题,UIViewController但我得到了最后的错误.

Attempt to present ViewController whose view is not in the window hierarchy

这是我的代码:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex];

    if([title isEqualToString:@"Wokay"])
    {
        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
        UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"Vibes"];
        [self.window.rootViewController presentViewController:vc animated:YES completion:nil];

    }
}

代码错误:

Warning: Attempt to present <ViewController: 0x110634bc0> on <Login: 0x10951e7f0> whose view is not in the window hierarchy!